Estimates of London's population between 1801 and 2001 (persons present 1801 to 1991 and residents for 2001 onwards) derived from historic Census data.
Sources: years to 1971 - Greater London Council Research Memorandum 413, The Changing Population of the London Boroughs; 1981 Census Small Area Statistics, Table 1; 1991 Census Small Area Statistics, Table 1. Figure for Year-1939 is a mid-year estimate for the year 1939. Figure for Year-...

Detailed Country of birth, by borough from the 2011 Census.
Most detailed country of birth (274 countries), by borough.
Data taken from 2011 Census Commissioned table CT0048 (ONS).
Source: 2011 Census (27 March).
File contains two tables of the same data with boroughs arranged down the side and along the top.
Visualise the data in this Instant Atlas report.
Similar data to this at ward level is available in this census tool.